Airmen from the 4th Logistics Readiness Squadron issued the M-50 Joint Service General Purpose Mask to approximately 3,200 Airmen here.
The M-50 JSGPM is the new standard gas mask for all military branches. The Air Force is in the process of systematically replacing all MCU-2A/P masks servicewide. Seymour Johnson received a shipment of the masks a month ago and has been performing mass unit issues and fit tests ever since. The M-50 JSGPM also has an improved head harness and a wider view than its 1980s predecessor. Compared to the MCU-2A/P, the new mask has better voice projection, softer material, an improved hydration system and dual filters that protect against more than chemical agents.
Each Airman completes a series of tests to ensure their mask has a good seal. The tests include normal breathing, deep breathing, side-to-side and up-and-down head movements, and jaw movements. Once an Airman passes a fit test with a mask, another one is not required unless a person gains or losses a substantial amount of weight, which prevents the mask from sealing properly. Airmen are not allowed to eat, drink or smoke 30 minutes prior to taking a mask fit test.